Selector-switch.



L. VON NAGY.

SELECTOR SWITCH.

APPLICATION FILED Aue.25.191s.

Patented Feb. 1, 1916.

. above mentioned patent;

NEW YORK.

To all whom it may concern:

-Be it known that I, LADISLAUS VON NAGY,

who arrived in New York from Hungary in October, 1906, when sixteen years of age,

declared my intentionof becoming a citizen of the United States August 10,1908, enlisted in the U. S. Army August 12, 1908, and was honorably discharged August 11, 1911, have been a constant resident of the United States since my arrival, but have not taken" out my final naturalization papers, am now residing at Plainfield, in the county-of Union and State of New Jersey, and have invented certain new and useful Improvements in.;,SelectorSwitches, of which thefollowing is a full, clear, concise, and exact description.

This invention relates to automatic telephone switches, of the panel type suchas shown in Patent'No. 1,123,696.

The principal object of this inventionis the provision of improved means for controlling the activity of the several brush sets of'the switch.

Referring to the drawing, Figure 1 is a side elevation of a switch with parts broken away; Fig. 2 is a cross-section on the line 2-2 of Fig. 1 showing the brushes in their normal or operative positions in solid lines and in their rotated or inoperative position in dotted lines, and Fig. 3 is a cross-section on the line 33 of Fig. 1 and shows the ratchet and pawl by means of which a brush set is held in its inoperative position.v

The switch herein disclosed, with the exception of the brushes and the brush controlling mechanism, may be of substantially the same construction as that shown in the In the drawing, 1 represents the brush shaft upon which are secured' a plurality of brush sets 2, usually five in number. Each brush-set, as herein disclosed, consists of four brushes maintained in slightly spaced relation by. means of insulation blocks 3. The brushes of the set are insulatively secured in any desired manner to a clamping ring 4, which is rigidly secured to the collar 5 in any desired manner. The collar 5 is rotatably mounted on the shaft 1, but the upward movement thereon is limitedby. the ring 6 fixed to the shaft Specification of Letters Patent.

as rrnirr on on.

LADISLAUS VON NAGY, 0F PLAINFIELD, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO WESTERN ELECTRIC COMPANY, INCORPORATED, A CORPORATION OF SELECTOR-SWITGH.

fixed to the lower end of the sleeve 5, and the other end of which is secured to a pro- ]ection 9 carried by the collar 10, fixed to the shaft 1.' This spring, in addition to maintaining the collar 5 against the ring 6, tends to rotate the collar- 5 in an anti clockwise direction, as Viewed from above, this rotation being limited by means of the projection 11 of the disk 8 engaging projection 9. Opposite projection 11 on the disk 8 is a ratchet 12 arranged to be en- .gagedby the pawl 13, between the bracket members 14 carried by the collar 10. The pawl 13 lower end which tends toic'orce the upper end inwardly toward the shaft 1. If desired, a spring may be substituted for this purpose. Rigidly secured to each collar 5, in. any desired manner, is an operating lever or finger 15.

Patented Feb. 1, 1916. Application filed August 25, 1915. Serial No. 47,2et8.

pivotally mounted has a weighted Extending parallel to the is ro- It may be here noted tliat'the brush sets in the present structure differ from those shown in the above mentioned patent in that no means are provided for separating them to inoperative position. They normally occupy a position directly below their respective sections of terminals in the panel bank, and the sets, with the exception of the selected one, -are rendered inoperative by being rotated in a clockwise direction to the position shown in dotted lines in Fig'. 2, and are maintained in such position by engagement of the pawl 13 with the ratchet member 12.

The operation of the switch is as follows: If the lowermost brush set is to be selected, the shaft 1 will be moved upwardly one step which will bring the finger 15 opposite the notch 18 in the trip control member 17 of this particular brush set. The trip rod 16 will then be rotated by the operation of magnet '19. Finger 15 ot the lowermost set will pass through the notch 18 of its brush controlling member 17, but the fingers 15 of the other brush sets will engage the solid portions of their members 17, and the brush sets will. be

rotated to the right as shown in dotted lines in Fig. 2. Upon reaching their inoperative position, the pawls 13 will be positioned back of the ratchet members 12 in order to hold the brush sets inoperative. The shaft 1 will then be moved upwardly in' the usual manner to cause the brushes of the selected set to move over the terminals in its section of the terminal bank. When the switch is returned to its normal position, the lower ends of the pawls l3 engage the frame members 22 in order to retract the pawls and re lease the brush sets; Had it been desired to select the second-set ofbrushes instead of the first, the'shaft 1 would have been moved upwardly two steps before the rod 16 was rotated, and so on, the shaft being moved up a number of steps or positions corresponding to the number of the brush set it is desired to use.

What is claimed is:

1. In an automatic switch, a brush support, a plurality of brushes on said support,

a series of stationary contacts for each brush, means normally maintaining said-brushes in an operative position, a brush selecting device for rotating all undesired brushes to an inoperative position at one side of the rows of'contacts, and means for maintaining the rotated brushes in their inoperative.position.

2. In an automatic switch, a plurality of multiply connected brushes, a series of stationary contacts for each brush tension devices normally maintaining said brushes in an operative position, a brush controlling device, means for operating said device to rotate all undesired brushes to an inopera tive position at one side of the rows of contacts, and means for maintaining the rotated brushes in their inoperative position.

in an automatic switch, a plurality of multiply connected brushes, a series of stationary contacts for each brush, spring devices normally maintaining said brushes in a position to traverse their series of contacts, a brush controlling device, means for operating said device to rotate all undesired brushes to an inoperative position at one side of their rows of contacts, and pawl and ratchet devices for holding the rotated brushes in their inoperative positions.

l. In an automatic switch, a plurality of multiply connected brushes, a series of stationary contacts arranged to be traversed by each brush, tension devices normally maintaining said brushes in a position to traverse their series of contacts, a brush selecting rod, means for rotating said rod, and devices on said rod cooperating with said brushes to rotate all except, a selected one of said brushes to an inoperative position.

5. In an automatic switch, a brush supporting shaft, a plurality of multiplyconnected brushes rotatably mounted on said shaft, a series of stationary contacts for each brush, tension devices normally maintaining said brushes in a position to traverse their series of contacts, a brush selecting rod, brush controlling members on said rod, one being adjacent to each brush set when in its normal position, an operating lever on each brush arranged to cooperate with its respective controlling member, means for rotating said rod, means for moving said shaftlongitudinally, notches in said brush controlling members arranged to permit the passage therethrough of said levers, said notches being arranged at 'n'ogressively increasing distances from the normal position of said brushes, so that the rotation of said rod after a predetermined longitudinal movement of saidshaft will cause all except a selected one of said brushes to be rotated to LADISLAUS VON NAGY. 

